The effect of eight-week total-body resistance training (TRX) on hemodynamic parameters and body composition in overweight and obese pre-hypertensive women

Document Type : Original Article

Authors

Department of Physical Education and Sports Sciences, Faculty of Humanities, Shahid University, Tehran, Iran

Abstract

Background and Purpose: High blood pressure is a serious yet modifiable risk factor for cardiovascular diseases. High blood pressure is a multifactorial condition, closely related to sedentary lifestyle. Overweight and obesity are main risk factors for this condition and exercise training is believed to be helpful in managing obesity and high blood pressure. However, few studies have investigated the potential impacts of resistance training especially isometric resistance training on body composition and hemodynamic parameters in overweight and obese women with high blood pressure.
Materials and Methods: The study included 22 pre-hypertensive women, with an average age of 38.41±4.96 years, body mass index 30.09±2.71 kg/m2, systolic blood pressure 127.09±4.94, and diastolic pressure 86.77±6.76 mmHg. The participants were randomly assigned to either the control group (n=10) or the total resistance exercise (TRX, n = 12) group. The exercise program lasted 8 weeks, 3 sessions per week on alternate days. Each session involved 12 total body exercises using the TRX strap, focusing on static contractions of core muscles. Hemodynamic parameters and body composition were measured before and after the intervention under identical conditions. The paired samples t-test was used to analyze the within-group changes and the independent samples t-test with the gain scores method was used between-group comparisons (p<0.05).
Results: The results showed that eight weeks of TRX training led to significant improvement in body mass (p=0.004), body mass index (p=0.006), body fat percentage (p=0.001), waist circumference (p=0.001) and waist to hip ratio (p=0.008). Additionally, resting heart rate (7.44 %), systolic blood pressure (5.24 %), rate pressure product (12.25 %) and mean arterial pressure (6.67 %) all showed significant improvements in the intervention group (p<0.05). Between-group comparisons revealed that compared to the control group all body composition indices (body weight, body mass index, body fat percentage, waist circumference and waist to hip ratio) and hemodynamic variables (resting heart rate, diastolic blood pressure, double product and mean arterial pressure) were significantly improved in the TRX group, except for systolic blood pressure (p=0.138) and pulse pressure (p=0.158).
Conclusions: TRX training has a positive effect on body composition and hemodynamic parameters, except for systolic blood pressure, in overweight and obese women with pre-hypertension. Therefore, it seems that TRX training is a safe and useful approach for weight control and blood pressure management in these individuals.
 
 
 
 

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References

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History

  • Receive Date: 09 June 2024
  • Revise Date: 23 July 2024
  • Accept Date: 31 July 2024
  • First Publish Date: 31 July 2024
  • Publish Date: 22 August 2024

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